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The Fleet  Our Rigs List by Name Discoverer Seven Seas
Fleet Specifications
| Discoverer Seven Seas |
| The DISCOVERER SEVEN SEAS is a self-propelled Dynamically Positioned drillship capable of operating in moderate environments and water depths up to 7,000 feet using a 18¾in 15,000 psi BOP and 21in OD marine drilling riser. |
| Rig Type |
Other Deepwater |
 |
| Design |
Sonat Offshore Discoverer Class; self-propelled dynamically positioned drillship |
| Builder |
Mitsui Engineering & Shipbuilding Ltd, Osaka, Japan |
| Year Built |
1976/1997 |
| Classification |
ABS 1A1 + A1 + AMS (E) (M) Mobile Drilling Unit, SOLAS 1974, |
| Flag |
Panama |
| Accommodation |
140 berths |
| Helideck |
83 ft x 83 ft; rated for Sikorsky S-61; 2,000 gallon refuelling system |
| Moonpool |
|
| Station Keeping |
Dynamically Positioned |
| Max Drill Depth |
25,000 ft / 7,620 m |
| Max Water Depth |
7,000 ft / 2,134 m |
| Operating Conditions |
Significant Wave: 25ft; Wind: 50 knots; Current: 1.5 knots |
| Storm Conditions |
Maximum Wave: 110ft; Wind: 100 knots |
Technical Dimensions
| Length |
534 ft |
163 m |
| Breadth |
80 ft |
24 m |
| Depth |
32 ft |
10 m |
| Operating Draft |
25 ft |
8 m |
| Ocean Transit Draft |
0 ft |
0 m |
| VDL - Operating |
9,517 st |
8,636 mt |
Capacities
| Liquid Mud |
4,600 bbls |
25,827 cu ft |
731 cu m |
| Drill Water |
12,400 bbls |
69,620 cu ft |
1,970 cu m |
| Potable Water |
1,400 bbls |
7,860 cu ft |
222 cu m |
| Fuel Oil |
24,000 bbls |
134,748 cu ft |
3,813 cu m |
| Bulk Mud |
|
12,000 cu ft |
340 cu m |
| Bulk Cement |
|
4,800 cu ft |
136 cu m |
| Sack Material |
24,000 sacks |
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Drilling Equipment
| Derrick |
Pyramid 170 x 46 x 54 ft; 590mt nominal capacity |
| Drawworks |
Continental Emsco C-3 II, 3,000 hp; 1¾in drill line; type SS disc brake & Elmagco 7838 brake |
| Motion Compensator |
Houston Systems Model C, 272mt operating (544mt pinned) |
| Top Drive |
Varco TDS-4S, 590mt |
| Rotary |
Continental Emsco C-495, 49½in opening |
| Pipe Handling |
Byron Jackson 3-arm semi-automatic system, 168 drill pipe fingers and 24 drill collar fingers. |
| Mud Pumps |
3 x Gardner Denver 1,600hp triplex pumps |
| Shale Shakers |
4 x Brandt LCM-2D |
| Desander |
1 x Brandt SRS-2 with (2) 12in cones (1,000gpm) |
| Desilter |
2 x Brandt SE-16 w/ (16) 4in cones (960 gpm) |
| Mud Cleaner |
1 x Q-200 Centrifuge |
| BOP |
2 x Hydril 18¾in 15,000 psi double rams; Vetco HD-H4 15,000 psi wellhead connector |
| LMRP |
Shaffer 18¾in 10,000psi annular, Vetco type ExF LMRP HAR riser connector |
| Diverter |
Vetco KFDS/CS0 |
| Control System |
Hydril electric-hydraulic multiplex system. |
| Riser |
86 x Vetco Gray HMF 21in OD, 75ft joints with 15,000 psi 3in ID C&K lines. |
Riser
Tensioners |
725mt maximum tensioning capacity |
Guideline
Tensioners |
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Podline
Tensioners |
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| Choke & Kill |
2 x Cameron manual chokes and 2 x Cameron remote controlled chokes |
| Cementing |
Byron Jackson, 15,000 psi unit |
Machinery
| Main Power |
6 x EMD MD-20-645E9 with 2,500kW generators; 1 x EMD MD-12-E8-6 with 1,050kw generator. |
| Emergency Power |
1 x Caterpillar 3304 diesel driving 1 x 90kW generator |
| Power Distribution |
General Electric SCR System |
| Deck Cranes |
2 x Bucyrus Erie MK 35, 80ft booms, 32mt @ 20ft; 2 x Bucyrus Erie MK 60, 120ft booms, 42mt @ 25ft |
| Thrusters |
6 x Bird-Johnson controllable pitch thrusters (2,500hp each) |
| Propulsion |
2 x propellers (powered by 8 x 2,000hp electric motors) |
Mooring Equipment
| Winches |
Class only |
| Wire/Chain |
Class only |
| Anchors |
Class only |
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